A transformer, a switchgear panel or a cable is only as good as the insulation that keeps its high voltage where it belongs. Before it’s ever energised for real, that insulation gets deliberately stressed \u2014 above its rated voltage, and with a simulated lightning strike \u2014 and watched to see whether it holds, and whether it’s free of the small internal discharges that predict eventual failure. Neometrix’s high-voltage test bench proves exactly that: AC and DC withstand, lightning impulse and partial discharge testing on transformers, switchgear, insulators, bushings and cables, to IEC 60060 and IEC 60270, representative up to roughly 800 kV with impulse into the MV range.<\/p>\n
The hard, defining engineering here isn’t the voltage source \u2014 it’s applying and removing a lethal voltage safely. That means an earthed test cage, door interlocks, automatic earthing and discharge sticks, air clearances and screening, all built around the source rather than added afterward. Everything else on the bench exists inside that safety envelope.<\/p>\n
You have to read kilovolts up to megavolts with a calibrated voltage divider, and you have to catch partial discharge in picocoulombs \u2014 a vanishingly small signal \u2014 against real-world electrical noise. That means the measurement chain and the screening around it are engineered as carefully as the voltage source itself; a discharge measurement swamped by ambient noise is worse than no measurement at all, because it can pass a defective transformer.<\/p>\n
Did the insulation withstand the applied AC, DC and impulse voltage without breaking down \u2014 and how much partial discharge and dielectric loss does it show under stress? The first is a pass\/fail result. The second is the early warning: a transformer that passes withstand testing today but shows elevated partial discharge is telling you something about its remaining service life before it ever fails outright.<\/p>\n
A high-voltage lab sits in the same test-laboratory family as Neometrix’s EMI\/EMC laboratory and its EV, e-motor and charger test systems \u2014 the underlying competence to lay out, safety-engineer, instrument and commission a test facility, applied here specifically to high voltage.<\/p>\n
It’s worth being direct about this: the transformer or switchgear panel under test isn’t the hard part, and neither, really, is the voltage source itself. The lethal-voltage safety envelope \u2014 the earthed cage, interlocks, earthing sticks, clearances \u2014 and the measurement of kilovolts and picocoulombs against ambient noise are what actually make a high-voltage lab trustworthy.<\/p>\n
The HV test transformer, impulse generator, partial-discharge detector and voltage dividers are bought-in specialist equipment from established manufacturers. Neometrix engineers the lab around them: layout, safety, earthing, screening, controls and measurement integration. No specific delivered laboratory is claimed on this page \u2014 this describes a reference configuration engineered to order.<\/p>\n